package thirteen;

import java.io.File;
import java.io.FileFilter;

public class ListFilesDemo2 {
    public static void main(String[] args) {
        File dir = new File(".");
        if (dir.isDirectory()){
//            FileFilter filter = new FileFilter() {
//                @Override
//                public boolean accept(File file) {
//                    String name = file.getName();
//                    return name.endsWith(".txt");
//                }
//            };
//            File[] subs = dir.listFiles(filter);
            File[] subs = dir.listFiles(file -> file.getName().endsWith(".txt"));
            for(File sub:subs){
                System.out.println(sub.getName());
            }
        }
    }
}
